<!--
http://matthewfl.com/unPacker.html
http://www.jb51.net/article/9705.htm
http://blog.csdn.net/lrc803/article/details/44281379
-->
<html>
<head>
<title>encode/decode</title>
<script>

a = 62;
function encode() {
    var code = document.getElementById('code').value;
    code = code.replace(/[\r\n]+/g, '');
    code = code.replace(/'/g, "\\'");
    var tmp = code.match(/\b(\w+)\b/g);
    tmp.sort();
    var dict = [];
    var i, t = '';
    for (var i = 0; i < tmp.length; i++) {
        if (tmp[i] != t) dict.push(t = tmp[i]);
    }
    var len = dict.length;
    var ch;
    for (i = 0; i < len; i++) {
        ch = num(i);
        code = code.replace(new RegExp('\\b' + dict[i] + '\\b', 'g'), ch);
        if (ch == dict[i]) dict[i] = '';
    }
    document.getElementById('code').value = "eval(function(p,a,c,k,e,d){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--)d[e(c)]=k[c]||e(c);k=[function(e){return d[e]}];e=function(){return'\\\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\\\b'+e(c)+'\\\\b','g'),k[c]);return p}(" + "'" + code + "'," + a + "," + len + ",'" + dict.join('|') + "'.split('|'),0,{}))";
}

function num(c) {
    return (c < a ? '': num(parseInt(c / a))) + ((c = c % a) > 35 ? String.fromCharCode(c + 29) : c.toString(36));
}

function run() {
    eval(document.getElementById('code').value);
}

function decode() {
    var code = document.getElementById('code').value;
    code = code.replace(/^eval/, '');
    document.getElementById('code').value = eval(code);
} </script>
</head>
<body>

<textarea id=code cols=160 rows=30>

</textarea > <br > <input type = button onclick = encode() value = 编码 > <input type = button onclick = run() value = 执行 > <input type = button onclick = decode() value = 解码 >
</body>
</html>
